It's pretty silly, but if you think it's in good fun, don't let anyone stop you from enjoying yourself. Not what I would consider a turn-on, exactly...
I think Twerking should be taught in all schools, public and private. If you can't Twerk, you don't graduate! =p
I don't like it, and its not my thing. But. Anything that follows a general format of: can [girls/guys] do [thing that guys/girls can do]? is fine. If you want to do something, don't let gender stop you.
I don't like twerking, no matter who does it. There's also this thing about cultural appropriation related to it, which makes it questionable in my book.
I don't care. I twerk for jokes. Let everybody do what they want. And in all honesty, people who twerk in a serious manner aren't people I'd like to hang out with anyway.